Determine where the given function is decreasing and increasing, and where its graph is concave up or concave down. Find the relative extrema and inflection points, and sketch the graph of the function.
17. f(x) = (x-2)3 以中文解釋為什麼要求 f"(2)=0及f(2)=0,還有為什麼要標點(0,-8)
